
    % Indicates the letter areas in the image axes handle
    function drawLetterAreaIndicators (handles,color,rmin, rmax, cmin, cmax)
        %Get the axes of image displayer
        axes(handles.axesIm);
        %Draw the top left indicator
        line([cmin cmax], [rmin rmin], 'LineWidth', 1.4, 'Color', color);
        line([cmin cmin], [rmin rmax], 'LineWidth', 1.4, 'Color', color);
        %Draw the bottom right indicator
        line([cmax cmin], [rmax rmax], 'LineWidth', 1.4, 'Color', color);
        line([cmax cmax], [rmax rmin], 'LineWidth', 1.4, 'Color', color);
    end